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            <td class="headerCovTableEntry">8</td>
            <td class="headerCovTableEntryLo">0.0 %</td>
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            <td class="headerItem">Date:</td>
            <td class="headerValue">2020-09-11 22:50:33</td>
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            <td class="headerCovTableEntry">0</td>
            <td class="headerCovTableEntry">5</td>
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<pre class="sourceHeading">          Line data    Source code</pre>
<pre class="source">
<a name="1"><span class="lineNum">       1 </span>            : // Copyright Kevlin Henney, 2000-2005.</a>
<span class="lineNum">       2 </span>            : // Copyright Alexander Nasonov, 2006-2010.
<span class="lineNum">       3 </span>            : // Copyright Antony Polukhin, 2011-2014.
<span class="lineNum">       4 </span>            : //
<span class="lineNum">       5 </span>            : // Distributed under the Boost Software License, Version 1.0. (See
<span class="lineNum">       6 </span>            : // accompanying file LICENSE_1_0.txt or copy at
<span class="lineNum">       7 </span>            : // http://www.boost.org/LICENSE_1_0.txt)
<span class="lineNum">       8 </span>            : //
<span class="lineNum">       9 </span>            : // what:  lexical_cast custom keyword cast
<span class="lineNum">      10 </span>            : // who:   contributed by Kevlin Henney,
<span class="lineNum">      11 </span>            : //        enhanced with contributions from Terje Slettebo,
<span class="lineNum">      12 </span>            : //        with additional fixes and suggestions from Gennaro Prota,
<span class="lineNum">      13 </span>            : //        Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
<span class="lineNum">      14 </span>            : //        Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
<span class="lineNum">      15 </span>            : //        Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
<span class="lineNum">      16 </span>            : // when:  November 2000, March 2003, June 2005, June 2006, March 2011 - 2014
<span class="lineNum">      17 </span>            : 
<span class="lineNum">      18 </span>            : #ifndef BOOST_LEXICAL_CAST_BAD_LEXICAL_CAST_HPP
<span class="lineNum">      19 </span>            : #define BOOST_LEXICAL_CAST_BAD_LEXICAL_CAST_HPP
<span class="lineNum">      20 </span>            : 
<span class="lineNum">      21 </span>            : #include &lt;boost/config.hpp&gt;
<span class="lineNum">      22 </span>            : #ifdef BOOST_HAS_PRAGMA_ONCE
<span class="lineNum">      23 </span>            : #   pragma once
<span class="lineNum">      24 </span>            : #endif
<span class="lineNum">      25 </span>            : 
<span class="lineNum">      26 </span>            : #include &lt;typeinfo&gt;
<span class="lineNum">      27 </span>            : #include &lt;exception&gt;
<span class="lineNum">      28 </span>            : #include &lt;boost/throw_exception.hpp&gt;
<span class="lineNum">      29 </span>            : 
<span class="lineNum">      30 </span>            : namespace boost
<span class="lineNum">      31 </span>            : {
<span class="lineNum">      32 </span>            :     // exception used to indicate runtime lexical_cast failure
<span class="lineNum">      33 </span><span class="lineNoCov">          0 :     class BOOST_SYMBOL_VISIBLE bad_lexical_cast :</span>
<span class="lineNum">      34 </span>            :     // workaround MSVC bug with std::bad_cast when _HAS_EXCEPTIONS == 0 
<span class="lineNum">      35 </span>            : #if defined(BOOST_MSVC) &amp;&amp; defined(_HAS_EXCEPTIONS) &amp;&amp; !_HAS_EXCEPTIONS 
<span class="lineNum">      36 </span>            :         public std::exception 
<span class="lineNum">      37 </span>            : #else 
<span class="lineNum">      38 </span>            :         public std::bad_cast 
<span class="lineNum">      39 </span>            : #endif 
<span class="lineNum">      40 </span>            : 
<span class="lineNum">      41 </span>            : #if defined(__BORLANDC__) &amp;&amp; BOOST_WORKAROUND( __BORLANDC__, &lt; 0x560 )
<span class="lineNum">      42 </span>            :         // under bcc32 5.5.1 bad_cast doesn't derive from exception
<span class="lineNum">      43 </span>            :         , public std::exception
<span class="lineNum">      44 </span>            : #endif
<span class="lineNum">      45 </span>            : 
<span class="lineNum">      46 </span>            :     {
<span class="lineNum">      47 </span>            :     public:
<span class="lineNum">      48 </span>            :         bad_lexical_cast() BOOST_NOEXCEPT
<span class="lineNum">      49 </span>            : #ifndef BOOST_NO_TYPEID
<span class="lineNum">      50 </span>            :            : source(&amp;typeid(void)), target(&amp;typeid(void))
<span class="lineNum">      51 </span>            : #endif
<a name="52"><span class="lineNum">      52 </span>            :         {}</a>
<span class="lineNum">      53 </span>            : 
<span class="lineNum">      54 </span><span class="lineNoCov">          0 :         virtual const char *what() const BOOST_NOEXCEPT_OR_NOTHROW {</span>
<span class="lineNum">      55 </span>            :             return &quot;bad lexical cast: &quot;
<span class="lineNum">      56 </span><span class="lineNoCov">          0 :                    &quot;source type value could not be interpreted as target&quot;;</span>
<a name="57"><span class="lineNum">      57 </span>            :         }</a>
<span class="lineNum">      58 </span>            : 
<span class="lineNum">      59 </span><span class="lineNoCov">          0 :         virtual ~bad_lexical_cast() BOOST_NOEXCEPT_OR_NOTHROW</span>
<span class="lineNum">      60 </span><span class="lineNoCov">          0 :         {}</span>
<span class="lineNum">      61 </span>            : 
<span class="lineNum">      62 </span>            : #ifndef BOOST_NO_TYPEID
<span class="lineNum">      63 </span>            :         bad_lexical_cast(
<span class="lineNum">      64 </span>            :                 const std::type_info &amp;source_type_arg,
<span class="lineNum">      65 </span>            :                 const std::type_info &amp;target_type_arg) BOOST_NOEXCEPT
<span class="lineNum">      66 </span><span class="lineNoCov">          0 :             : source(&amp;source_type_arg), target(&amp;target_type_arg)</span>
<span class="lineNum">      67 </span>            :         {}
<span class="lineNum">      68 </span>            : 
<span class="lineNum">      69 </span>            :         const std::type_info &amp;source_type() const BOOST_NOEXCEPT {
<span class="lineNum">      70 </span>            :             return *source;
<span class="lineNum">      71 </span>            :         }
<span class="lineNum">      72 </span>            : 
<span class="lineNum">      73 </span>            :         const std::type_info &amp;target_type() const BOOST_NOEXCEPT {
<span class="lineNum">      74 </span>            :             return *target;
<span class="lineNum">      75 </span>            :         }
<span class="lineNum">      76 </span>            : 
<span class="lineNum">      77 </span>            :     private:
<span class="lineNum">      78 </span>            :         const std::type_info *source;
<span class="lineNum">      79 </span>            :         const std::type_info *target;
<span class="lineNum">      80 </span>            : #endif
<span class="lineNum">      81 </span>            :     };
<span class="lineNum">      82 </span>            : 
<span class="lineNum">      83 </span>            :     namespace conversion { namespace detail {
<span class="lineNum">      84 </span>            : #ifdef BOOST_NO_TYPEID
<span class="lineNum">      85 </span>            :         template &lt;class S, class T&gt;
<span class="lineNum">      86 </span>            :         inline void throw_bad_cast() {
<span class="lineNum">      87 </span>            :             boost::throw_exception(bad_lexical_cast());
<span class="lineNum">      88 </span>            :         }
<a name="89"><span class="lineNum">      89 </span>            : #else</a>
<span class="lineNum">      90 </span>            :         template &lt;class S, class T&gt;
<span class="lineNum">      91 </span><span class="lineNoCov">          0 :         inline void throw_bad_cast() {</span>
<span class="lineNum">      92 </span><span class="lineNoCov">          0 :             boost::throw_exception(bad_lexical_cast(typeid(S), typeid(T)));</span>
<span class="lineNum">      93 </span>            :         }
<span class="lineNum">      94 </span>            : #endif
<span class="lineNum">      95 </span>            :     }} // namespace conversion::detail
<span class="lineNum">      96 </span>            : 
<span class="lineNum">      97 </span>            : 
<span class="lineNum">      98 </span>            : } // namespace boost
<span class="lineNum">      99 </span>            : 
<span class="lineNum">     100 </span>            : #endif // BOOST_LEXICAL_CAST_BAD_LEXICAL_CAST_HPP
<span class="lineNum">     101 </span>            : 
</pre>
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